Typewriting machine



Sept. 10, 1929. o. J. MEENECKE 1,727,377

TYPEWRITING MACHINE Filed May 25, 1928 Affarney? /nvenf0r:

Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE;

OTTO J'. MEINEGKE, OF NEW YORK, N. Y., ASSIGNOR TO UNDERWOOD ELLIOTTFISHER COMPANY, OF NEW YORK, N, Y.,

A CORPORATION OF DELAWARE.

I TYPEWRITING MACHINE,

Application filed May 25,

The invention relates to means for illuminating the interior of asound-proof casing for typewriting machines, said illuminating means toenable the operator to watch the work within said casing through a usualtop window provided in the liftable casing cover, without being annoyedby light reflecting from the window-pane. A usual type of a sound-proofcasing exposes only the operating keyboard to the touch of the operator,and otherwise entirely encloses the machine, said cover being liftablefor ready access to the machine.

The invention provides an electric light and an opaque hood or reflectorencasing said light and which is'held upon, or close to, the window-paneabove the line of vision, so as to positively direct the light throughthe window-pane upon parts to be illuminated. Due to the provision offlexible connections for supplying the electric current, the light isliftable together with the casingcover.

The preferred lighting attachment includes a trough-like hood orreflector to house suitably-shaped electric incandescent bulbs. Thereflector substantially extends from side to side of the window, andresilient latching means are provided to hold the reflector directlyupon the outer surface of a preferred glass window, so that no, light isallowed to escape except through the window-pane To aid this purpose,the edges of the reflector facing the window-pane may be trimmed withstrips of suitable pliable material, so as to snugly close upon the surface of the pane. a

A' feature of the invention is concerned with a simple method ofsecuring the reflector upon the casing, and provides a bent over edge orflange at the rear of the reflector. By slipping this'edge between therear edge portions of the windowane and the adjacent windowdedge, the reector may be located, whereupon preferred flat springmembers or latches,which are pivoted upon each end of said reflector, may be manipulatedto' engage with correspondin recesses 1928. Serial No. 280,413.

. volve special features of original construction inthe casing itself,or material alterations in, or additions to, a casing-structure alreadycom leted.

Another eature includes resilient means provided within said reflectorfor holding "for attaching the reflector upon the casing.

Figure 3 is a cross-section substantially taken from Figure 2, clearlyshowing the method of attaching, and showing the relation between thelight-source and the caraiaghefplaten, the latter indicated in dot andFigure 4 is a cross-section of the detached reflector, showing preferredclas ing means for holding the floating ends 0 the bulbs,

and showing the strip of pliable material attached to the front edge ofthe reflector.

A sound-proof casing for typewriters, as shown in the drawings, Figure1, has side portions overhanging the base of the casing, so as toaccommodate the movements of the typewriter-carriage. The casing, asshown, includes a lower body-portion or shell 10, which receives thetypewriting machine to be seated therein, and which is, provided with arectangular opening 11, through which projects the forward part of themachine-frame 11, so as to expose the operating keyboard, indicated at12, to the touch of the operator.

A liftable cover 13 is provided on top '0 the shell 10 to complete thecasing, the front edges of the cover and of said shell,respectively,'being formed with lips or cushions 14, said lips to closeupon each other to prevent escape of sound, while permitting the passage.of carriage-operating handles upon the casing-cover was to ice there-15 16 flector in place. This method does not in- The operation of themachine may be 0bv flector upon the glass.

i '45 mally set to point. forwardly,

I usual sound-deadening to freely float about; its pivot 24.

served through the oblong glass windowpane 17, which forms part of thecover, and which is mounted upon the inside thereof by-m'eans of metalstrips 18 which hold the window-pane seated upon the supporting ledges18 of the cover 13. Suitable strips 19 of shock-absorbing material areinterposed between the preferred glass window-pane and the supportingledges 18". The window setting is most clearly shown in Figure 3, whichfigure also indicates the casing.

An electric light attachment, which, ac-

cording to the invention, is to illuminate the interior of the casing,substantially includes a light-containing trough-like hood or reflector21, which is held down upon the surface'of the window-pane above theline of vision, so as to throw light directly through the glass upon thetypewriting machine. Hold-down means for the reflector are such as toallow the same to be attached to a casing of standard type, as shown.The preferred method of attachment requires the rear edge of the troughor reflector 21 to be formed with a bent-over portion or flange 22,which may be slipped into a clearance between the edge portion of theglass and the adjacent window-led e to locate the ret furthermorerequires the front portion of the reflector to have attached thereto astri terial, as rubber 23, and w ich is to be resiliently held down uponthe glass by flat spring-members or latches 24, which are to lock thereflector-body in position, as will be presently described.

, The trough-like hood or reflector 21' is formed with end pieces 25which are to carry lugs or stubs 26, each stub having pivoted thereonone of said flat spring-memers or latches 24, which may be allowed Thefree end of the spring-member or latch is norand has riveted thereon afinger-piece27 by which it may be'sprung downwardly over an interposedpin 28, so that a projection 29'upon dinary switches 32 said fingerpiece will register with a correslight sideward outward movement of thetensioned spring-member will then bring the projection 29 intoengagement with the recess 30 and so lock the attachment in place.

The left-hand side of Figure 2 shows the giselpgaged position of latch24 in dot and In'the present embodiment, the reflector 21 encloses twocylindrical bulbs 31, each of which is mounted in a socket 32 securedupon the end piece 25 of the reflector. Or-

allow each bulb to be separately lit. Clasping metal strips 33 to holdthe floating end of each bulb are shown lining 20 of the of pliable maofsaid shield ofl its light from the vision of the operator, and aflexible cable-connection for in Figure 4 to be secured upon the insideof the reflector. Their purpose is to prevent the bulbs from vibratingor working 'iin rovements may be used without others.

aving thus described my invention, I claim:

1. The combination with a typewriter and a sound proof casing having atransparent top-window pane, of means on the top of the casing forilluminating the interior "of the casing, said means including anelectric bulb arranged close to the outer surface of the window-pane, soas to throw light through the pane upon the typewriting machine, anopaque hood fastened to the top of the typewriter-casing and encasingthe bulb, so as to shield oif its light from the visionof the operator,and means for supplying electric current to the bulb.

2. The combination with a typewriter and a soundproof casing having aliftable cover provided with a transparent top-window pane, of means onthe top of the cover for illuminating the interior of the casing, saidmeans including an electric bulb arranged close to the upper part of theouter surface of the window-pane, so as to throw light through the paneupon the typewriting machine, but to be out of the line of vision of ethe operator looking at the machine, an

hood detachably fastened to the top opaque cover and encasing the bulb,so as to supplying electric current to the bulb, but allowing a liftingof the bulb together with said cover of the casing.

3. The combination with a typewriter and a soundproof casing having atransparent top-window pane, of means on the top of the casing forilluminating the interior of the casing, said means including anelectric bulb arranged close to the upper part of the A outer surface"of the window-pane, so-as to throw light through the pane upon thetypewriting machine, but to be out of the line of vision of the operatorlooking at the machine, a trough-lik" opaque hood encasing the .bulb, soas to shield off its light from the vision of the o rator, but allowingthe passage of the lig t through the windowpane, means for anchoring therear part of the hood detachably to the top of the casing, means forlight-tightening the lower edge of the front part of the hood withreference to the window-pane, means for yieldingly pressing the hoodagainst the window-pane, means for fastening the bulb within thetrough-like hood, and means for supplying electric'current to the bulb.

4. The combination with a typewriter and a soundproof casing having atransparent top-window pane, of means on the top'of the casing forilluminating the interior of the casing, said means including anelectric bulb arranged close to the upper part of the outer surface ofthe window-pane, so as to throw light through the pane upon the machinebut to be out of the line of vision of the operator looking at themachine, a trough-like opaque hood encasiug the bulb, so as to shieldoff its light from the vision of the operator. but allowing the passageof the light through the window-pane,'a bent-over flange at the rearpart of the hood to be slipped between the rear edge of the window-paneand the adjacent window-ledge, means for light-tightening the lower edgeof the front part of the hood with reference to the window-pane. meansfor yieldingly pressing the hood against the window-pane, means forfastening the bulb within the trough-like hood, and means for supplyingelectric current to the bulb.

5. The combination with a typewriter and a soundproof casing having atransparenttop-window pane, of means on the top of the casing forilluminating" the interior of the casing, said means including anelectric bulb arranged close to the upper part of the outer surface ofthe window-pane, so as to throw light through the pane upon thetypewriting machine, but to be out of the line of vision of the operatorlooking at the machine, a trough-like opaque hood encasing the bulb, soas toshield off its light from the vision of the operator, but allowingthe passage of the light through the window-pane, means for anchoringthe rear part of the hood detachably' to the top of the casing. astripof pliable material at the lower edge of the front part of the hoodbearing against the window-pane, means for yieldingly pressing the hoodagainst the window-pane, means for fastening the bulb within thetrough-like hood, and means for supplying electric cur rent to the bulb.i

6; The combination with a typewriter and a. soundproof casing having atransparent light-tightening the lower edge of the front part of thehood with reference to the win dow-pane, leaf-springs fixed at both endwalls of the hood near to the rear part of the hood and pressing downthe front edge of the hood if the front ends of the springs are broughtinto locking engagment with the top of the casing, means for fasteningthe bulb within the trough-like'hood, and means for supplying electriccurrent to the bulb.

7. The combination with a typewriter and a. soundproof casing having atransparent top-window pane, of means on the top of the casing forilluminating the interior of the casing, said means including electricbulbs arranged close to the outer surface of the window-pane, so as tothrow light through the pane upon the typewriting machine, but to be outof the line of vision of the operator looking at the machine, an opaquehood fastened to the top of the typewriter-casing and encasing thebulbs, so as to shield of? their light from the vision of the operator,shield-plates in the ends of the hood with sockets to receive thefoot-ends of the bulbs, clasps within the hood for holding thehead-parts of the bulbs, and means for supplying electric current to thebulbs.

OTTO J. MEINECKE.

casing, said means including an electric bulb arranged close to theupper part of the outer surface of the window-pane, so as to throw lightthrough the pane upon the typewriting machine, but to be out of the lineof vision of the operator looking at the machine, a. trough-like opaquehood encasing the bulb, so as to shield off its light from the vision ofthe operator, but allowing the'passage of the light through thewindow-pane, means for anchoring the rear part of the hood detachably tothe top of the casing, means for

